This update includes improvements to functions as listed below.
The exact changes may differ depending on your device model, country, and service provider.
To get the best from your device, please keep your device up to date and regularly check for software updates.

Galaxy S21 5G(SM-G991U)


Build Number : G991USQU4AUGQ
Android version : R(Android 11)
Release Date : 2021-08-20
Security patch level : 2021-08-01
• Overall stability of your device has been improved.
• The security of your device has been improved.

Build Number : G991USQS4AUFD
Android version : R(Android 11)
Release Date : 2021-07-12
Security patch level : 2021-07-01
• The security of your device has been improved.

Build Number : G991USQU4AUF5
Android version : R(Android 11)
Release Date : 2021-07-05
Security patch level : 2021-06-01
• The performance of Camera has been improved
• Overall device performance has been improved.
• The security of your device has been improved.

Build Number : G991USQU3AUDD
Android version : R(Android 11)
Release Date : 2021-05-14
Security patch level : 2021-05-01
• The performance of Camera has been improved
• Enhanced Quick Share
- Improve file sharing between Galaxy devices using Quick Share.
• The security of your device has been improved.

Build Number : G991USQU2AUC8
Android version : R(Android 11)
Release Date : 2021-04-05
Security patch level : 2021-04-01
• The performance of Camera has been improved
• Overall device performance has been improved.
• The security of your device has been improved.

Build Number : G991USQU2AUB5
Android version : R(Android 11)
Release Date : 2021-03-08
Security patch level : 2021-03-01
• The performance of Camera has been improved
• Overall device performance has been improved.
• The security of your device has been improved.

Build Number : G991USQU1AUAG
Android version : R(Android 11)
Release Date : 2021-02-11
Security patch level : 2021-02-01
• The performance of Camera has been improved
• Overall device performance has been improved.
• The security of your device has been improved.

Build Number : G991USQU1AUA3
Android version : R(Android 11)
Release Date : 2021-01-23
Security patch level : 2021-01-01
• The performance of Camera has been improved
• Wi-Fi connectivity and stability have been improved.
• The performance of Fingerprint recognition has been improved.
• Overall stability of functions improved.
• The security of your device has been improved.